ADA4940-1ARZ-R7
Instrumentation, Op Amps, Buffer Amps
Technical Specifications
| Type | Description |
|---|---|
| Iq A | 0.001 A |
| Settling time | 34ns |
| output type | Differential |
| Input Offset Current(Ios) | 50nA |
| Ib - Input Bias Current | 1.6uA |
| Maximum Power Supply Range (Vdd-Vss) | 7V |
| Power Supply Rejection Ratio (PSRR) | 90dB |
| Noise density(eN) | 3.9nV/sqrtHz@100kHz |
| Output Current | - |
| Channels | 1.0 |
| Type | Description |
|---|---|
| Voffset V | 60 V |
| Slew Rate Vus | 95.0 |
| Operating Temp | -40°C ~ +125°C |
| Common Mode Rejection Ratio | 86.0 |
| Voffset Drift Uv | 1.2 |
| Gain Bandwidth Product | - |
| Features | Single-ended to differential conversion;Enable/shutdown function;Adjustable output common-mode voltage;Integrated ADC driver |
| Rail To Rail | Rail-to-rail output |
| Single Supply | 3V~7V |
| Package / Case | SOIC-8 |
Product Introduction
The ADA4940-1/ADA4940-2 are low noise, low distortion fully differential amplifiers with very low power consumption. They are an ideal choice for driving low power, high resolution, high performance SAR and Σ-Δ analog-to-digital converters (ADCs) with resolutions up to 16 bits from dc to 1 MHz on only 1.25 mA of quiescent current. The adjustable level of the output commonmode voltage allows the ADA4940-1/ADA4940-2 to match the input common-mode voltage of multiple ADCs. The internal common-mode feedback loop provides exceptional output balance, as well as suppression of even-order harmonic distortion products.
With the ADA4940-1/ADA4940-2, differential gain configurations are easily realized with a simple external feedback network of four resistors determining the closed-loop gain of the amplifier. The ADA4940-1/ADA4940-2 achieve very low levels of distortion with an input voltage noise of only 3.9 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4940-1/ADA4940-2 make them well suited for a variety of data acquisition and signal processing applications.
Features
- Small signal bandwidth: 260 MHz
- Ultralow power 1.25 mA
- Extremely low harmonic distortion −122 dB THD at 50 kHz, −96 dB THD at 1 MHz
- Low input voltage noise: 3.9 nV/√Hz
- 0.35 mV maximum offset voltage
- Balanced outputs
- Settling time to 0.7%: 34 ns
- Rail-to-rail output: -V5 + 0.1 V to +Vs - 0.1 V
- Adjustable output common-mode voltage
- Flexible power supplies: 3 V to 7 V (LFCSP)
- Disable pin to reduce power consumption
- Available in LFCSP and SOIC packages
Applications
- - Low power PulSAR/SAR ADC drivers - Single-ended-to-differential conversion - Differential buffers - Line drivers - Medical imaging - Industrial process controls - Portable electronics
Datasheet
Alternative Parts
Common ADA4940-1ARZ-R7 alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542339000 |
| USHTS | 8542330001 |
| TARIC | 8542339000 |
| Type | Details |
|---|---|
| CAHTS | 8542330000 |
| BRHTS | 85423390 |
| INHTS | 85423300 |
| MXHTS | 8542.33.99 |
Sourcing Information
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